Automatic web-guiding device.



. l. LEWIS.

AUTOMATIC WEB GUIDING DEVICE.

APPLICATION FILED FEB. I3. I911. 1,136,686. Patented Apr. 20, 1915.

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W. l. LEWIS. AUTOMATIC WEB GUIDING DEVICE.

APPLICATION FILED FEB. l3.19ll. 1,136,686. Patented Apr. 20, 1915.

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W. I. LEWIS.

AUTOMATIC WEB GUIDING DEVICE. APPLICATION mm ran. 13. tsp.

Patented Apr. 20, 1915.

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fnvenzor: W 3 JIM/A oQzi'd'orney WILLARD I. LEWIS, OF WALPOLE,MASSACHUSETTS.

AUTOMATIC WEB-GUIDING DEVICE.

Specification of Letters Patent.

Patented Ap'r. 20; 1915.

Application filed February 18, 1911. Serial No. 608.449.

To all whom it may concern:

Be it known that I, Wmmnn I. a citizen of the Unital States, residing atWalpole, in the county of Norfolk, State of Massachusetts, have inventeda certain new and useful Improvement in Automatic Web-Guiding Devices,of which the following is a specification, reference had therein to theaccom drawings.

The invention has r dhld n to devices of the clas intended to cause theselvages or margins of a traveling continuous web to follow :11 certainpredetermined paths Instances 0 such devices are shown, de-

scribed, and claimed in my prior U. S. Letters Patent No. 678,121,granted July 9, 1901, and No. 905,720, granted December 1908.

The invention consists useutially in the combination with travelingendles carriers acting to positively hold the selvage or margin of aweb, of ngeanshfor bringing the rtion o sue carrying means automntlcfilgto the 'tion of the oncomingportion ofthe' vageormargin, orto that of apredetermined lateral portion of the web, compensating thereby forvariations in the line of travel of the said selvag'e or margin, or saidother portion, of

the web.

An embodiment of theinvention in practical form is shown in the drawingscom bined with a calendering machine.

In the drawings,--Figure 1 shows in side 85 elevation the saidcalenderingand the said embodiment of the invention. Fig.2isaplanofthepartsshowninFigl, with certain parts broken away at oneside ofthemachine. Fig.3isaviewinvertical section in the plane indicatedby the dotted line3,3,inFig.2

Thedrawingsdlowtheframelandcalen rolls 2, 3, 4, of a. calend -machine ofordinary character and e of 5isthesupply-rollofthewebatobeoperated uponin the machine, the said web pai1fromtheroll5nnderandpartly aroun alower guide-roll 6, then up to,-

preferably employ at 9 a detector-r0 and cooperating parts and featuresembodying" the main rinciples of the detector-rolls the ad uncts thereofas shown and described in my prior Letters Patent aforemd. The webpasses under and partly around the detector-roll 9 after leaving thespreader-rolls 8, 8. As in the said patents, the said detector-roll isprovided with ru- 1, dially movable detector-pins which are indimted bythe dots at 10 in Fig. 2 of the dra hereof, the said detector-pinsacting to etermine the 'tioii of sleeves 11, 11, lengthwise upon shaft12 of the de' tector-roll. As will be understood, the

sitions of the said sleeves 11, 11, are varied transversely of themachine in correspondonce with variations in the positions of therespective selvages or of the web a, this variation being brohgt aboutthrough the agency of the detector-pins 10 accord- LE m m fi'iti l Es r?vages or e o e detectonmechamsm are fully shown and described in thesaid Letters Patent they are not shown herein, and specific descriptionof the same is unnecessary. The detectorroll is rotated positively bymeans of driving connections comprising a. sprocketwheel 13 which fixedppon tll fl shaft a sprocket-chain 4 passing pa aronn the saidsprocket-wheel 13, sa second sprocket-wheel, 15, partly around which thesaid sprocket-chain 14 passes, a shaft 16 on which the saidsprocket-wheel 15 is fixed, a second sprocket-wheel 17 fixed on the saidshaft 16, a sprocket-chain 18 pasing partly around the saidsprocket-wheel 17, and a sprocket-wheel 19 fixed on one journal of thecalender-roll 3, the sprocket-chain 18 passing partly around saidsprocketwheei 19.

Intermediate the detector-roll and the calender-rolls I employ the moviv or travel ing endless carriers to which have referred. The esentialfeatures of thefillustrated form thereof comprise selvagevcarryingwheels 20, one of which is located at each side of the path of thetraveling web,

and u n which the selva or marginal portion s of the web are receii edas the web leaves the detector-roll, and endless flexible bands, belts,or chains 21 which clamp the said selvage or marginal portions of theweb upon the peripheries of the wheels 20. Each wheel is ournaled upon astud 22 carried by a support 23, u n which stud the wheel is capable ofrevo ring-2s the web travels onward. The correspon g flexible band,belt, or chain 21 travels upon flanged wheels or pulleys 24, 25, and 26mounted in connection with said support 23, in addition to trav aroundend-portions of a tele 'scopingcy der 2? and of a guide-roll 28,

the said' cylinder and cylinder-roll being mounted independently of thesa d support at the delivery-side of the carrier-devices. Between thedewheel or pulley 26 and the cylinder the said band, belt, or chainmend: around and coacts with about onelid! of the 'phery of the wheel20. B mcanaof portionofthesaidban belt, or chain the correspondingsalvage or marginal portion of the web as it poses from detecthr-roll 9to and around such part f the 'phery of wheel 20 1s gripped positing thesaid periphery, and thereby y held or pulleys 24 and 25 are madeadaptable to enable the tension of the band, t, or chain 21 to be112%ated, and anv slack thereof taken pp.

e adjustability is attainefd by mount ng them I: o to arms 0 asupporting lever pivoted at upon the support 23. To one arm of the saidlever is connected pivotally a screw-threaded rod 31 engaging with oneinternally-threaded portion of a swivel-nut 32, the otherinmolly-threaded portion of the latter being eng rod 33 which is alsopivotally connected at 34 with the lower of support 23. The screwthreads o rods 31, 33, are oppositel inclined. By turning theswivel-nut, the lever 29 and wheels or pulleys 24, 25, may be moved totighten or slacken the band,belt,orchain21asrequired. The said wheels orpulleys are located resfictively at oppcsite sides of the said band, 1:,orchainsoastoactthemore readily and iifectively in tightem'ng orslackemn' g the tter The sup rts 23 are pivoted at the delivery side 0the earlier-wheels upon 11 per and lower pivots 35, 35. The axes o thepivots of each support are in practically the same radical line as thedelivery-point of the corresponding wheel 20, so that when the supportis swung transversely of the machine upon the said pivots by theautomatic adiusfing mechanism the position of the said de very-point isnot disturbed transversely. The salvage or margin of the web leaves theperiphery of the wheel 20 with the band,

aged with a second screw-threaded belt, or chain 21, and with the latterpasses under and partly around the telescoping cylinder 27, and passesthence to the cal endering rolls.

The automatic adjustment of'the receivmg portions of the trav ca gmeanstransversely to the position of e selvages or margins, or otherpredetermined portions of the width of the web, is provided 'for Eacharm 36 is embraced by a fork 39 extending down from a portion 40 of soport 23. Thereby, the movement of the co responding sleeve 11transversely of the machine occurnng' in the detecting action of thedetector-devices operates through the engagement of the arm 36 with thesaid fork to shift the portion of the traveling earner-devicescorrespondingly.

$2111, 2, is showma sp spring vmg' 'itsextremitieswiththestndscarnedbythe ports 23, 23, and on which the wheels 26% aremounted. This operates with a tendency to draw the earner devicw at theopposite sides of the machine toward eadi other, and through the t ofthe supports 23, 23, with the sleeves 11, 11, it operates to move thelatter inwardly for co-action with the detecting pins 10.

As disclosed in the Letters Patent aforesaid, the detector-roll andassociated are adjustable to suit the width of w op erated upon.Thedistanceaarhtransversely o the machine, of the elivery-portions ofthe traveling carrier-devica is adjustable-to suit the width of the web,and alsotogivetherequired readingortransverse action. 0 provide for thelatter adjustment, the pivots 35, 35, are mounted upon blocks 41, 41,which in turn are mounted upon transversely-extendingrods42,42,thataresupportedinbearings instands43,43,attachedtothefmme1ofthecalen machine. Eachrod42is formed with ri t-and-left screw-threads,and each block 41 is internally threaded for screw-thread cut with theportion of rad upon which it is fitzgd. Consequen y, y rota a rod, e oblocks thereon ar d fnoved nearer t g stlig or farther apart. The tworods are connected to rotate in unison by means of sprocket-wheels 45,45, fixed'thereon, and a sprocket-chain 46 posing around suchsprocket-wheels, a hand-wheel 47 being fixed upon the upper rod forconvenience in tuming the rods when required. In the transverseadjustment of the delivery-portions of the carrier-devices, they takewith them the (-nd sections of the telescoping roll 27.

When operating upon a web having selvages or margins which are thickerthan other portions of the web, the thick portions mass up more quicklyupon the receiving roll than the other portions. To enable the increaseto be distributed more or. less I provide for shifting the guidingdevices bodily transversely of the machine. This provision is made bygiving the screwthreaded rods 42, 42, capacity for movement endwisewithin their hearings in the stands 43, and by supplying a convenienthandle 48 Figs. 2 and 3 in connection with a hub i9 Fig. 2 having aprojection 50 entering between shoulders on a block 51 mounted looselyon the outer portion of one of such rods between collars 52, 52. The hub49 is mounted upon an upright stud 53 carried by a bracket 54 projectingfrom one of the stands 43. By taking hold of the handle 48 and swingingthe same and the hub 49 transversely, the screw-threaded rods and thedelivery-portions of the carriers are shifted transversely, producing acorresponding shift of the web as it passes from the carrier-devices. Tolock the parts in the position of transverse adjustment which has beengiven to them, the handle 48 is connected with the hub 19 by ahorizontal pivot .55 on which it is adapted to swing verti- Cally, and asegmental rack 56 is fixed to bracket 54 below the handle. A projectingportion of the handle is adapted to engage with the teeth of this rack,when the handle is in its normal lowered position. Thereby the handleand other parts are locked against transverse movement. When the handleis raised, it is thereby disengaged from the rack, and may be swungtransversely to the extent required for the trans verse shift desired inthe case of the delivery portions of the carrier-devices, and then onlowering the handle into engagement with the segmental rack the partsare locked again.

Intermediate the two sets of carrier'de vices I employ a cloth-support60 Fig. 3 in the form of an arch. This cloth-support is tele ctniic,being made in overlapping sections as shown in Fig. 3 in section. Eachsection is mounted upon an arched support 61, hich is pivotallyconnected at 62, at the side adjacent the detector-roll, to a supportingstand (33 which is mounted upon the cross-rod 37 with capacity to beshifted thereon transversely of the machine. This adjustment is effectedby sliding the said stand along the said cross-rod. The stand is capableof turning around the crossrod. A rearward extension of the stand 63 issupported by an adjacent cross-rod .64 carried by the fixed frame 38.For the purpose of enabling the arch'shaped support to be adjustedforwardly and rearwardly when required, an adjusting screw 65 iscombined with the said rearward extension of the supporting frame 63,the said adjusting-screw taking against the last-mentioned cross-rod. Byturning the said adjustingscrew, the supporting-frame is rocked aroundthe cross-rod 37, and thereby the pivot 62, and with it the arch, isshifted forward or back, according as the adjusting-screw is turned inone direction or the other. To enable the height of the arch to beadjusted, an extension of the arched support 61 is furnished with anadjustingscrew 66 taking against the rearmost portion of the saidsupporting frame, 63. By turning the said adjusting-screw 66 in onedirection or the other, the arch is swung up or down. These differentadjustments enable the arch to be brought into substantial concentricitywith the traveling carrier-wheels 20.

In my co-pending application filed simultaneously herewith, Serial No.608,448, I have claimed more broadly the combination comprising selvagedetecting means, separate moving or traveling carriers for therespective selvages or margins of a web, and swinging supports for thesaid carriers op eratively controlled by the said detecting means toadjust the receiving portions of the said carriers to correspond withthe oncoming portions of the selvages or margins.

I claim as my invention.

1. In combination, traveling endless carriers acting to positively holdthe selvage or margin of a web, and means for bringing the receivingportions of such carriers automatically to the position of the oncomingportion of the selvage or margin or to that of a predetermined lateralportion of the web, compensating thereby for variations in the line oftravel of the said selvage or margin, or other portion, of the web.

2. In combination, selvage-detecting means, sclvage-carrying wheels andselvageretaining endless bands cooperating with the said wheels, andmeans controlled by the said selvage-detecting means for automaticallyadjusting the receiving portions of the said wheels and bands tocorrespond with the oncoming portions of the selvages or margins of theweb being operated upon.

3. In combination, selvage detecting means, selvage-carrying wheels andselvageretaining endless bands cooperating with the said wheels,supports for the said wheels and bands pivotally mounted adjacent thedelivery portions thereof, and means controlled by the saidselvage-detecting means for automatically adjusting the receivingportions of the said wheels and bands to correspond with the oncomingportions'of the selvages or margins of the web being operated upon.

4. In combination, selvage-carrying means, for the opposite selvages ofa traveling web, and means for bodily shifting the said meanstransversely at will without varying the distance apart of the devicesat the opposite selvages to thereby correspondingly shift the generalpath of the web being operated upon.

5. In combination, selvage-carrying wheels and selvage-retaining endlessbands cooperating with the said wheels, and means for bodily shiftingthe said wheels trans: veisely without varying their distance apart tothereby correspondingly shift the general path of the web being operatedupon.

6. In combination, selvage-carrying wheels and selvage-retaining endlessbands cooperating with the said wheels, means for adjusting the saidwheels toward and from each other, a telescoping arch-shaped websupportintermediate the said wheels, and means for adjusting the saidweb-support vertically and also from front to rear to bring it intoconcentricity with the wheels.

7 In combination, salvage-carrying wheels and selvage-retaining endlessbands cooperating with the said wheels, swinging supports for the saidwheels and bands, supports to which the said swinging supports arepivotally hung, means to adjust the said supports transversely tothereby vary the distance between the delivery portions of therespective wheels, and means to shift the entire assemblage transverselywith respect to the path of t e web being operated upon.

8. In combination, selvagedetecting means, selvage-carrying means andselvageretaining endless bands cooperating with the said wheels,swinging supports for the said wheels and bands pivotally mountedadjacent the delivery portions thereof, means controlled by the saidselvage detecting means for automatically adjusting the receivingportions of the said wheels and bands to correspond with the oncomingportions of the selvages or margins of the web being operated upon, andmeans for bodily moving the delivery-portions of the said wheels andbands and their swinging supports to efi'ect a transverse shift oi thegen-.

eral path of the web being 0 erated upon.

In testimony whereof I a 'X my signature in presence of two witnesses.\VILLARD I. LEWIS.

Witnesses:

CHAS. F. RANDALL, NATHAN B. DAY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

It is hereby certified that in Letters Patent No. 1,136,686, grantedApril 20, 1915, upon the application of Willard 1. Lewis, of Walpole,Massachusetts, for an improvement in Automatic Web-Gniding Devices, anerror appears in the printed specification requiring correction as followsz Page 4, line 40, for the word meens second occurrence, readwheels; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the casein the Patent Office. I

Signed and sealed this 11th day of May, A. D., 1915.

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents.

